title: Proteomic identification of differentially expressed proteins in Arabidopsis in response to methyl jasmonate.
abstract: Jasmonates (JAs) are the well characterized fatty acid-derived cyclopentanone signals involved in the plant response to biotic and abiotic stresses. JAs have been shown to regulate many aspects of plant metabolism, including glucosinolate biosynthesis. Glucosinolates are natural plant products that function in defense against herbivores and pathogens. In this study, we applied a proteomic approach to gain insight into the physiological processes, including glucosinolate metabolism, in response to methyl jasmonate (MeJA). We identified 194 differentially expressed protein spots that contained proteins that participated in a wide range of physiological processes. Functional classification analysis showed that photosynthesis and carbohydrate anabolism were repressed after MeJA treatment, while carbohydrate catabolism was up-regulated. Additionally, proteins related to the JA biosynthesis pathway, stress and defense, and secondary metabolism were up-regulated. Among the differentially expressed proteins, many were involved in oxidative tolerance. The results indicate that MeJA elicited a defense response at the proteome level through a mechanism of redirecting growth-related metabolism to defense-related metabolism.
authors.affiliation: Alkali Soil Natural Environmental Science Center, Northeast Forestry University/Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field, Ministry of Education, Harbin 150040, China.
authors.forename: Yazhou
authors.initials: Y
authors.lastname: Chen
authors.forename: Qiuying
authors.initials: Q
authors.lastname: Pang
authors.forename: Shaojun
authors.initials: S
authors.lastname: Dai
authors.forename: Yang
authors.initials: Y
authors.lastname: Wang
authors.forename: Sixue
authors.initials: S
authors.lastname: Chen
authors.forename: Xiufeng
authors.initials: X
authors.lastname: Yan
mesh_terms: D000085:Acetates / Q000494:pharmacology*; D017360:Arabidopsis / Q000187:drug effects* / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000187:drug effects / Q000378:metabolism*; D003517:Cyclopentanes / Q000494:pharmacology*; D030562:Databases, Protein; D015536:Down-Regulation / Q000187:drug effects; D015180:Electrophoresis, Gel, Two-Dimensional; D005961:Glucosinolates / Q000378:metabolism; D054883:Oxylipins / Q000494:pharmacology*; D010937:Plant Growth Regulators / Q000494:pharmacology*; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism; D020543:Proteome / Q000032:analysis / Q000187:drug effects*; D040901:Proteomics / Q000379:methods*; D015398:Signal Transduction; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D053719:Tandem Mass Spectrometry; D013997:Time Factors; D015854:Up-Regulation / Q000187:drug effects
chemical_list: D000085:Acetates; D029681:Arabidopsis Proteins; D003517:Cyclopentanes; D005961:Glucosinolates; D054883:Oxylipins; D010937:Plant Growth Regulators; D020543:Proteome; C072239:methyl jasmonate